Page 34 - Summary 6 2025
P. 34

Delta Modern Language Schools
   Science department
   Grade 6
   1st term 2024- 2025

Galvanometer:

 It is a device used to detect the flow of small electric current.

  What happened if…?

1-When a magnet was placed at rest away from the coil?
The needle of galvanometer didn't move which
indicates there was no electric current.
2-When a magnet was moved toward the coil.
The needle of galvanometer moved to one side
which indicates that there was an electric current.
3-When a magnet moved rapidly back and forth inside?
The needle of galvanometer moved rapidly.

     • When the movement of magnet increases, the generated electric current
        increases.

     • When the number of loops in the coil increases, the movement of the
        galvanometer increases, as the amount of generated electric current will
        increase.

    Pacemaker

 • The heart is a muscle that beats consistently for the duration of our lives.
 • The heart has a natural pacemaker which creates electric currents causing

    the heart to contract.
 • When the natural pacemaker starts to fail, sometimes we need an artificial

    pacemaker to keep the heart beating correctly.

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